[FIR-TEST] Move analysis tests to separate module

compiler/fir/analysis-tests/testData/resolve/smartcasts/problems/invoke.kt

@@ -0,0 +1,9 @@
+fun Any.withInvoke(f: String.() -> Unit) {
+    if (this is String) {
+        f() // Should be OK
+    }
+}
+
+fun String.withInvoke(f: String.() -> Unit) {
+    f()
+}

compiler/fir/analysis-tests/testData/resolve/smartcasts/problems/invoke.txt

@@ -0,0 +1,12 @@
+FILE: invoke.kt
+    public final fun R|kotlin/Any|.withInvoke(f: R|kotlin/String.() -> kotlin/Unit|): R|kotlin/Unit| {
+        when () {
+            (this@R|/withInvoke| is R|kotlin/String|) ->  {
+                R|<local>/f|.R|FakeOverride<kotlin/Function1.invoke: R|kotlin/Unit|>|(this@R|/withInvoke|)
+            }
+        }
+
+    }
+    public final fun R|kotlin/String|.withInvoke(f: R|kotlin/String.() -> kotlin/Unit|): R|kotlin/Unit| {
+        R|<local>/f|.R|FakeOverride<kotlin/Function1.invoke: R|kotlin/Unit|>|(this@R|/withInvoke|)
+    }